#正九九乘法表
for i in range(1,10):
    for j in range(1,i+1):
        print('%d * %d =%d' % (j,i,j*i),end='\t')
    print()

print('--' * 50)

for i in range(1,10):
    for j in range(1,i+1):
        print(f'{j} * {i} = {j * i}',end='\t')
    print()
print('--' * 50)

#倒3角九九乘法表
for i in range(9,0,-1):
    for j in range(1,i+1):
        print(f'{j} * {i} = {j * i}',end='\t')
    print()